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Eight‑Element GNSS Anti‑Jamming Antenna Module 8130 for UAVs and Vehicles

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Product Description

8130 is an Anti-jamming antenna built for satellite navigation platforms that need dependable positioning under intentional or unintentional RF interference. This eight-element GNSS anti-jamming antenna combines array reception, interference suppression, signal conditioning and optional navigation output in one compact module for UAVs, unmanned vehicles, marine systems and fixed installations.

Product Overview

As an Anti-jamming GNSS antenna and Integrated navigation anti-jamming unit, AJU-8130 is designed to receive useful GNSS signals while reducing the effect of broadband, narrowband, pulse and sweep jamming across BDS B1, GPS L1 and Galileo E1 bands. It supports eight RF channels and can mitigate 1 to 7 interference sources from different directions, helping navigation systems remain available in complex electromagnetic environments.

For integrators looking for an Anti-interference antenna, the unit combines an antenna array, anti-jamming processing module, built-in receiver and supporting interface design in a single housing. For buyers searching for a GNSS anti-interference antenna or CRPA antenna, this product is suited to applications where stable position, velocity and time data are essential for safety and mission continuity.

Main Advantages

Eight-element array architecture for stronger spatial suppression of interference than standard single-element GNSS antennas.
Multi-constellation support for BDS B1, GPS L1 and Galileo E1 reception.
Suppression capability against wideband, narrowband, pulse, sweep and mixed interference conditions.
Support for 1 to 7 simultaneous interference sources from different directions.
Optional built-in receiver output for PVT data after anti-interference processing.
RF output after processing for downstream GNSS equipment integration.
Wide DC 12V to 36V power range for vehicle, drone and marine power systems.
Rugged environmental capability with IP65 protection and wide operating temperature range.

Technical Specifications

GNSS and Anti-Jamming Performance

Parameter	Specification
Product type	Eight-element array integrated navigation anti-jamming unit
Supported bands	BDS B1, GPS L1, Galileo E1
Number of channels	8 channels
Interference types	Broadband, frequency-sweeping, pulse, narrowband and combinations
Number of interferers	1 to 7 sources in different directions
Single broadband suppression	Interference-to-signal ratio ≥110dB @ -130dBm
Three broadband suppression	Interference-to-signal ratio ≥100dB @ -130dBm
Seven broadband suppression	Interference-to-signal ratio ≥85dB @ -130dBm
Anti-jamming spatial range	Azimuth 0°~360°, Elevation -10°~90°

Integrated navigation anti jamming unit.jpg

RF Output and Receiver Performance

Parameter	Specification
RF output power	-55dBm ~ -70dBm
RF impedance	50 ohms
Output VSWR	≤2.0
Antenna port burnout resistance	≥10W
Receiver output	Positioning results through data interface
Horizontal positioning accuracy	≤7m (95%, PDOP≤4)
Vertical positioning accuracy	≤9m (95%, PDOP≤4)
Velocity measurement accuracy	≤0.2m/s (95%)

Electrical and Interface Specifications

Parameter	Specification
Operating voltage range	DC 12V~36V
Average power consumption	≤14W
Power/data connector	J30J-9ZK
RF connector	SMA-K
Default serial level	LVTTL (3.3V)
Default receiver output rate	5 Hz
Default baud rate	115200
Default protocol/messages	NMEA with GGA, GSV, RMC, VTG, ZDA

J30J Power and Data Pin Definition

Pin	Signal Definition	Signal Description	Instructions
1	+9V~+36V	Power Input	Unit Power Supply
2	+9V~+36V	Power Input
3	GND	Power Ground
4	GND	Power Ground
5	RX1	TTL Receive	GNSS receiver interface, output rate 5 Hz, baud rate 115200, NMEA protocol with GGA, GSV, RMC, VTG, ZDA messages are output by default
6	NC	NC
7	NC	NC
8	TX1	TTL Transmit
9	GND	Signal Ground

Multi constellation BDS B1 GPS L1 Galileo E1 antenna.jpg

Mechanical Specifications

Parameter	Specification
Dimensions	130mm × 130mm × 23.7mm
Product weight	≤500g (without heat sink weight)
Housing finish	Natural aluminum color with conductive oxidation treatment
Radome color	Silver-gray / white
Mounting interface	4 mounting screw holes on the side, M38 screw holes

Environmental Specifications

Parameter	Specification
Operating temperature	-40℃~+70℃, 10%~90%RH, no condensation
Storage environment	-45℃~+85℃, 10%~95%RH, no condensation
Waterproof rating	Not lower than IP65
Shock test	ISO 19453-3:2018
Vibration test	ISO 5309:2023

Standard Package

Item	Quantity	Note
Anti-jamming unit	1 pcs	130mm × 130mm
J30J cable	1 pcs	Included
Serial port level	1	Default level is LVTTL (3.3V)
Screws	1 set	1 set contains spring screws (M38) 8 pcs

Installation Notes

The bottom surface works as the metal heat dissipation area and should be mounted with good thermal contact or adequate airflow for reliable cooling. The top surface is the GNSS receiving plane and should face open sky without blockage for the best signal environment. When the unit is mounted inside a platform body, the material above the antenna should be RF transparent with L-band transmission not lower than 92 percent.

UAV platforms

Unmanned marine systems

Unmanned ground vehicles

Application Scenarios

AJU-8130 fits UAV platforms, unmanned ground vehicles, unmanned marine systems and other navigation platforms that require a CRPA antenna solution for better signal continuity under interference. It is also suitable for integrators looking for an Anti-jamming antenna, GNSS anti-jamming antenna, Anti-jamming GNSS antenna, Integrated navigation anti-jamming unit, Anti-interference antenna, or GNSS anti-interference antenna for high-reliability navigation